Sankt Gangolf, Parish church in Theuerstadt, Bamberg, Germany.

Sankt Gangolf is a Catholic parish church in Bamberg's Gärtnerviertel, built as a three-aisled basilica with a transept on the east. Its core dates from the third quarter of the 11th century, making it Bamberg's oldest surviving sacred building. Two towers with early Gothic forms rise between a 14th-century porch and a historicist west porch added in 1901 by Hans Schurr.

The church was founded between 1057 and 1059 under Bishop Gunther, with the current structure consecrated in 1063. Over the centuries it was repeatedly rebuilt, gaining elements from different artistic periods.

The church is dedicated to Saint Gangolf, an 8th-century Burgundian nobleman killed in his sleep by his wife's lover; his relics reached Germany with pilgrims on the Way of St. James. A portion of his head, probably from Eichstätt, is kept in the church. The former collegiate foundation was dissolved in 1803 during secularisation, after which the church became a parish church.

The main entrance is on the west side, where a historicist porch designed by Hans Schurr was added in 1901. The church stands in the Gärtnerviertel, and the interior was last restored between 2016 and 2019. The two 14th-century bells are among Bamberg's most notable in sound.

Inside the church is kept a relic containing a skull attributed to Saint Gangolf. This relic was brought here from elsewhere and represents a rare connection to early medieval saint veneration.